Form for winding armature-coils.



No. 667,!34. Patented Ian. 29, l90l. J. w-. LUNDSKOG.

FORM FOR WlNDlNG'AR MATURE COILS.

(Application Med Nov. 12, 1900. (No Model.) 2 Sheets-Sheet I.

No. 667,l34. v Patented Jan. 29. ml.

4 J..W. LUNDSKOG.

FORM FOR wmnms ARMATURE colLs.

(Applicatipn filed Nov. 12, 1900.) (No Model.)

2 Sheets-'91s 2.

Figs: rffiPI mzmvmg Witnesses:

Inventor? 55641 55). Julius W. Lundskog.

fltty.

' NITED STATES PATENT FFICE.

JULIUS W. LUNDSKOG, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THE GENERAL ELECTRIC COMPANY, OF NEW YORK.

FORM FOR WINDING ARMATURE-COILS.

SPECIFICATION forming part of Letters Patent No. 667,134, dated January 29, 1901.

Application filed November 12, 1900. Serial No. 36,176. (No model.)

To all. whom it may concern.-

Be it known that I, JULIUS W. LUNDSKOG, a citizen of the United States, residing at Lynn, county of Essex, State of Massachusetts, have invented certain new and useful Improvements in Forms for Winding Armature-Coils, (Case No. 1,455,) of which the following is a specification.

My invention relates to means for winding armature-coils of dynamo-electric machines or motors, and has for its object to provide a form upon which such coils may be wound with a minimum expenditure of labor and time and by which they may be made interchangeable, the utility of which is well understood in the art, the apparatus being adapted to armatu res of any number of poles, as hereinafter set forth.

I have illustrated the form as applied to a winding of the so-called four-turn armature; but it may be equally well applied to a coil of any other number of turns, the variations of construction being understood Without further explanation. Heretofore coils of this description have been made in various waysas, for instance, by winding on a form such as is shown and described in the patent to J. A. \Vebber, No. 561,636, dated June 9, 1896. The form therein described is mounted on a rotary table and contains a series of terraces or grooves upon which the coilis wound, the strands being carried back and forth to produce a substantially horseshoe shaped structure, which is afterward opened out and shaped to the proper configuration. This mode of winding the coil and the subsequent manipulation of it are liable to injure the insulation, and in any event considerable time and labor are consumed. Moreover, in the case of large coils the thickness of the wire is so great that the work is very laborious, since the winding must be done by hand. With the present invention, which can be fastened to a rotating shaft, the labor is greatly reduced and one man can do the work of several. Moreover, coils made upon my form are ready to be used with but slight subsequent manipulation and are much more uniform than those produced by the old method.

In the drawings, Figure l is a perspective View of my improved form with a four-turn coil wound upon it. Fig. 2 is a perspective view showing the coil ready to be removed from the form. Fig. 3 is a cross-section of the form on the line 3 3 of Fig. 2. Fig. 4 is a plan view of one edge portion of the form. Fig. 5 is a longitudinal sectional elevation of the sliding bars. Figs. 6 and 7 are plan views of the slide-bars.

The several parts are attached to or mounted upon a base A, of hard wood or the like, provided with means, such as holes a, for attaching it to a revolving face-plate. Along one edge of the base is a metallic strip B, which contains a series of terraces or steps b b 5 b These steps are carried around the ends of the strip. The opposite edge of the base has a strip B, provided at each end with a projecting finger Z) to confine the strands of the coil. At one corner of the base A, near one end of the strip B, isablock C, provided with a shoulder 0, adjacent to which is a stud or screw D, having an eccentric head which coacts with the shoulder c to clamp between them the end of the wire. Adjacent to this clamp an arm E projects from one side of the base A, having at its end an upturned flange e to serve as a gage for the end of the wire.

About midway between the strips B and B and extending across the base A are two parallel bars F F, preferably arranged in a shallow groove in the base A. Each bar has its end portions oifset into line with the corresponding portion of the other bar, the middle portions of the bars being crossed in order to bring said offset portions in line. The bar F has its middle portion arched to cross over the bar F and permitthem to slide relatively to each other. At one end of each bar is an outwardly-facing hook or abutment f, while at the opposite end of each bar is an inwardly-facing hook or abutment f. The bars are of substantially the same length, so that the adjacent abutments f f can be brought side by side, as shown in Fig. 1, leaving a small space between their adjacent ends for the passage of the wires. The bars may be retained in the shallow groove in the base A by means of screws a passing through slots in the bars.

Suitable means are provided for sliding the bars simultaneously to and fro in the groove in order to cause the abutments ff to approach or recede from each other. For this purpose I prefer to use a toggle composed of links G G, pivoted at one end to the bars F F, respectively. The other ends of the links are pivoted to a clamping-screw H, which passes down through a slot 1' in the bridge I, which spans the bars F F and is secured at each end to the base A. By moving the screw- H along the slot the toggle can be straightened or flexed and the bars correspondingly moved in the groove.

The operation of my device is as follows: The base A having been suitably mounted upon a revolving shaft, with the toggle straightened, as shown in Fig. 1, one end of the wire is placed against the gage e and firmly clamped between the head D and the shoulder c. The form is then rotated and the wire is laid along the lowest step b of the strip B, from which it is carried along under the hook or abutmentf, then under the adjacent hook or abutment f, then under the finger 11 along the edge of the strip B, and back under the opposite pair of hooks or abutments ff to the second step b of the strip B, and so on around the form. It will be observed that in passing through the space between the adjacent ends of the hooks ff the strands of the coil will be crossed, as clearly shown in Fig. 2. The coil having thus been wound, the several strands are temporarily fastened together by clips K, which can be conveniently placed upon the coil at each side at the point where the edges of the base and the strips B B are cut away, as shown at o The toggle is then flexed by moving the clamping-screw out along the slot t', thereby causing the bars to slide past each other and separating the abutments f f on each side. The parts then assume the position shown in Fig. 2, leaving the coil free to be lifted from the strips B B. It can then be covered with insulation and given such further slight manipulation as may be necessary to render it ready for use.

What I claim as new, and desire to secure by Letters Patent of the United States, is

1. A winding-form for armature-coils, comprising a base having a terraced edge, a pair of adjacent abutments on each side of the base, and means for causing said abutments to approach and recede from each other.

2. A winding-form for armature-coils, comprising a base adapted to be mounted on a rotating shaft and having a terraced edge, sliding bars lying across said base, and oppositely-disposed hooks on the adjacent ends of said bars.

3. A winding-form for armature-coils, comprising a base having a terraced strip secured to one edge, parallel sliding bars lying across said base, an inwardly-turned hook on one end of each bar and an outwardly-turned hook on the other end of the same, and a toggle for simultaneously moving said bars.

4. A winding-form for armature-coils, comprising a base having terraces on one edge, transverse sliding bars with their middle portions crossed and their end portions lying side by side, oppositely-disposed hooks on the adjacent ends of said bars, and means for simultaneously moving said bars.

5. A winding-form for armature-coils, comprising a base having a terraced strip along one edge, sliding bars with their middle portions crossed and their end portions lying side by side, an inwardly-faced hook on opposite ends of said bars, and an outwardlyfaced hook on the other ends, a bridge spanning said bars, a clamping-screw movable along said bridge, and links connecting said screw with said bars.

6. A winding-form for armature-coils, comprising a base having one edge terraced and the opposite edge provided with fingers, movable abntments between said edges on each side of the base, a clamp to hold the end of the wire adjacent to one end of the terraced edge, and a gage adjacent to said clamp.

In witness whereof I have hereunto set my hand this 8th day of November, 1900.

JULIUS W. LUNDSKOG.

- Witnesses:

DUGALD MoKILLoP, J OHN J. WALKER. 

